Aluminum 5086-H34 vs 5086-O
Aluminum · 5086 temper comparison
5086-H34 and 5086-O are two conditions of the same aluminum grade, 5086: H34 (strain hardened and stabilized, half hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 5086-H34 is the stronger of the two: yield strength 255 MPa (37 ksi) against 115 MPa (16.7 ksi) for 5086-O, about 122% more; tensile strength follows at 325 MPa (47.1 ksi) vs 260 MPa (37.7 ksi). In exchange, 5086-O is the more ductile: elongation 22% versus 10% for 5086-H34, and 5086-H34 is harder (78 HB vs 58 HB). On the shop floor, 5086-H34 machines more easily (50 vs 35 out of 100).
5086-H34Choose it when strength drives the design, or when the part is machined in volume.
5086-OChoose it when the part is bent, formed or impact-loaded.
5086-H34 vs 5086-O: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 71 GPa10.3 Msi · Shear Modulus 26 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.66 g/cm³0.1 lb/in³ · Melting Point (Solidus) 585°C1,085 °F · Liquidus Temperature 640°C1,184 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.8 µm/m·K13.2 µin/in·°F · Latent Heat of Fusion 397 J/g171 BTU/lb · Max Service Temperature (continuous) 65°C149 °F · Min Service Temperature -270°C-454 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 31 % IACS · Electrical Resistivity 5.6×10⁻⁸ Ω·m2.2 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.85 V · Corrosion Resistance 82 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Brazeability / Solderability 20 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12.5 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 35%
Strength versus weight
Yield strength against density for every aluminum grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
5086-H34 vs 5086-O — frequently asked
Is 5086-H34 stronger than 5086-O?
Yes. 5086-H34 has a typical yield strength of 255 MPa (37 ksi) against 115 MPa (16.7 ksi) for 5086-O — about 122% more. Tensile strength is 325 MPa (47.1 ksi) vs 260 MPa (37.7 ksi).
Which condition does FabDigit quote by default, H34 or O?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which is easier to machine, 5086-H34 or 5086-O?
5086-H34, by a small margin. Both rate fair for machinability — 50/100 against 35/100 for 5086-O; for welding the order is 5086-O first (excellent, 90/100) then 5086-H34 (excellent, 85/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5086-H34 and 5086-O side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.